Merge pull request #2 from Jackarain/master

gdi render improve
stupid me, revert readme.md
Merge https://github.com/Jackarain/avplayer
Merge pull request #6 from Jackarain/master

add buffering interface
add linux build port and fix
add libyk cmake
add travis
Update README.md
Merge github.com:Jackarain/avplayer

Conflicts:
	libyk/libyk.cpp
	libyk/libyk.h
Merge github.com:avplayer/avplayer